Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint

WANG Hao; HUANG Zhengui; CHEN Zhihua; GUO Zeqing; WANG Yihang; LIU Xiangyan; NA Xiaodong

doi:10.11993/j.issn.2096-3920.2024-0020

Volume 32 Issue 3

Jun 2024

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Article Navigation > Journal of Unmanned Undersea Systems > 2024 > 32(3): 507-515

WANG Hao, HUANG Zhengui, CHEN Zhihua, GUO Zeqing, WANG Yihang, LIU Xiangyan, NA Xiaodong. Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint[J]. Journal of Unmanned Undersea Systems, 2024, 32(3): 507-515. doi: 10.11993/j.issn.2096-3920.2024-0020

Citation:

WANG Hao, HUANG Zhengui, CHEN Zhihua, GUO Zeqing, WANG Yihang, LIU Xiangyan, NA Xiaodong. Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint[J]. Journal of Unmanned Undersea Systems, 2024, 32(3): 507-515. doi: 10.11993/j.issn.2096-3920.2024-0020

Citation:

WANG Hao, HUANG Zhengui, CHEN Zhihua, GUO Zeqing, WANG Yihang, LIU Xiangyan, NA Xiaodong. Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint[J]. Journal of Unmanned Undersea Systems, 2024, 32(3): 507-515. doi: 10.11993/j.issn.2096-3920.2024-0020

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Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint

doi: 10.11993/j.issn.2096-3920.2024-0020

National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China

Received Date: 2024-02-19
Accepted Date: 2024-04-07
Rev Recd Date: 2024-04-03

Available Online: 2024-05-15

Abstract

Abstract

In high-latitude areas, the icing period is inevitable during winter. In view of the special mechanical environment of ice cracks faced during underwater launching in low-temperature ice zones, it is of great engineering value to expand the application of submarine-launched marine equipment in a low-temperature ice zone. The presence of floating ice inevitably enhances the nonlinearity of submarine-launched vehicles during high-speed water exit. A 6-degree-of-freedom(DOF) motion model of the vehicle was built by using the dynamic fluid interaction module(DFBI). Through comparative analysis of the underwater and cross-water motion stages of the submarine-launched vehicle under different ice hole sizes and shapes, the influence of ice holes on the evolution of the water-exit cavity was explored. The findings indicate that the ice hole has an obvious binding effect on the cavity during the process of water exit, and the binding effect increases with the decrease in ice hole size. For the same shape of the ice hole, a smaller ice hole size is accompanied by a greater impact on the pitching motion characteristics of the vehicle. For the same ice hole size, the circular ice hole has a greater impact on the pitching motion characteristics of the vehicle than square and triangular ice holes.
- ice hole constraint,
- submarine launched,
- vehicle,
- water-exit cavity

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References(26)

References

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